Add Vertically

Adding 2-Digit Numbers: Learn

How to add two-digit numbers (for example 29 + 33).
  • Place one number above the other number so that the tens' place digits and ones' place digits are lined up. Draw a line under the bottom number.
    2 9
    + 3 3
  • Add the ones' place digits (9 + 3 = 12). This sum is a two-digit number, so place a one above the tens' place column and place the two below the line in the ones' place column.
    1
    2 9
    + 3 3
    2
  • Add the tens' place digits (1 + 2 + 3 = 6) and place the answer below the line in the tens' place column.
    1
    2 9
    + 3 3
    6 2

Adding Two-Digit Numbers: Practice

What is the Sum of the two Numbers?

00:00

+

Press the Start Button To Begin

You have 0 correct and 0 incorrect.

This is 0 percent correct.

Play

Game Name Description Best Score
How many correct answers can you get in 60 seconds? 0
Extra time is awarded for each correct answer.
Play longer by getting more correct.
0
How fast can you get 20 more correct answers than wrong answers? 999

Explore